Raman spectroscopic and advanced signal processing analyses for real time standoff detection and identification of explosives

Abstract

Laser Raman spectroscopy is a powerful instrument commonly used for detection of bulk and trace amounts of explosives. The work carried out in this paper is divided into two phases; the first phase is to propose a real time standoff explosive detection and identification system based on Raman spectroscopy that can be deployed in static checkpoints. The measurement is performed for samples placed in contact and at distances up to 1 m in ambient light conditions. The second phase is to propose a novel sophisticated signal processing and pattern recognition techniques for accurate identification and classification of the investigated materials.

Properties and Applications of Random Lasers as Emerging Light Sources and Optical Sensors: A Review

“…The observation of Raman lines opens a new perspective of RLs and might extend RL applications in noninvasive chemical probing in the turbid medium; for instance, for the assessment of bone quality during oral surgery [ 146 ] and for remote explosives identification for security screening applications [ 147 ]. Compared to the conventional Raman spectroscopy, the RL-SRS spectroscopy advances the shorter measurement time and higher signal-to-background ratio due to SRS and, meanwhile, advances the deeper penetration depth due to the multiple scattering in RLs.…”

Stand-off detection of explosive hazards based on time-gated Raman spectroscopy

“…In an international perspective, there are currently lots of research activities concerning explosive hazards detection, and stand-off detection of explosives is in main focus [1,2]. The reason for this interest is the occurrence of terrorist attacks on the civilian society involving improvised explosives devices IED [3][4][5].…”